Improvement in window-ventilators



S. W. COUCH.

Wind owNentilator. No, 59,800 I Patented Feb. 16,1875.

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, TATES IMPROVEMENT IN WINDOW-VENTILATORS.

Specification forming part of Letters Patent No. 159,800, dated February16, 1875; application filed December 19, 1874.

To all whom it may concern:

Be it known that I, SAMUEL W. 00mm, of Cold Spring, Putnam county, NewYork, have invented a new and Improved VVindow-Venti-v lator, of whichthe following is a specification Figure 1 is a front view of a window towhich my improvement has been applied. Fig. 2 is a verticalcross-section of the same, taken through the line 00 a, Fig. 1. Fig. 3is a vertical longitudinal section of the same, taken through the line yy, Fig. 2. Fig. 4 is horizontal section of one part of the ventilator,taken through the line 2 2, Fig. 3; and Fig. 5 is a detail front view ofone of the plates of the ventilator.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved ventilator forwindows, which shall be so constructed that it may be opened and closedby opening and closing the window-sash, and which shall be simple inconstruction and readily applied to the window.

A represents the frame or casing. B represents the lower sash, and 0represents the upper sash, of a window. I) are small metal plates ofsuch a length as to be readily placed in the window-frame.

To the inner side of each upper plate, D, are attached two or moretransverse bars, 61, which may be made round or dovetailed in form, asmay be desired. To the outer side of each lower plate, D, near its upperedge, are attached lugs d having notches formed in their outer edges ofsuch a shape as to receive and fit upon the bars d. The bars 01 areprovided with stops at their lower ends, to prevent the lugs 61 fromslipping off said lower ends. Two sets of plates, D, are used to formthe ventilator, and there may be two, three, or more plates in each set.The upper plates D of each set rest upon small hooks or other supports,attached to the top bar of the window-frame A or to a small bar or plateattached to said frame A, or the said plates may be secured in any otherconvenient manner.

The two sets of plates D are arranged with their inner sides toward eachother, as shown in Fig. 2. The two sets of plates D may be placeddirectly above the top bar of the upper sash G, as shown in Figs. 1 and2, in which case the top bar of said upper sash is grooved upon itsupper side to such a depth as to receive the plates D when they areclosed up.

.VVith this construction, when the upper sash G is lowered, the plates Ddescend with it or open out, as shown in Fig. 2, and when the said sashis raised they are closed up and iiiclosed in the groove of theupper-sash bar, so as to be entirely out of sight.

The plates D may be placed at the outer side of the upper sash, or uponits inner side, or one set of the plates D may be placed at the outerside, and the other set at the inner side, of said sash. In this casethe plates D are'raised or closed by pins attached to the sides of thesaid bars. With this construction the air passes in and out through thespaces between the plates.

The plates D may be made plain or they may be made in the form offrames, or in ornamental open work. In the last two cases they shouldhave wire-gauze or finely-perforated sheet-metal plates, (1 applied totheir inner sides. The plates D should have extensionplates E attachedto their ends, so as to be slid into and out of the sash-grooves of thewindow-frame A, when the said plates D have been adjusted in place toprevent the passage of air around ends of the plates D.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The improved ventilator, formed of the two sets ofplates, D, provided with the crossbars d and the notched lugs (P, toadapt them to be applied to a window, substantially as herein shown anddescribed.

2. The combination of the extension-plates E with the end parts of theplates I), substantially as herein shown and described.

SAMUEL W. COUCH. Witnesses:

JAMES T. GRAHAM,

T. B. MosHER.

